Decarbonizing device for internal-combustion engines



oct. 19,1926. 1,603,984

H. L. ROSE ET AL.

DECARBONIZING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed oct. 22, 1925 Patented ocr. 19, 1926.

UNITED STATES 1,603,984 PATENT oFFlcE. L

HENRY LASENBY ROSE, OF OAK BAY, AND FRANK LOV'EL` LASENBY ROSE, 0F VIC- TORIA, BRITISH COLUMBIA, CANADA..

DECARBONIZING DEVICE FOR INTERNAL-COMBUSTIN ENGINES. i

Application filed October 22, 1925, Serial No. 64,2'44. and in Canada March 20, 1925.

jby a simple apparatus means by which the varying factors concerned in the problem are utilized to correct/the defects above referred to and in a manner that is entirely automatic. v

Further results secured by the adoption of our invention consist in, the complete elimination of .pre-ignition, and the improvement in the imperfect combustion caused by 'varying engine speeds.

It is readily provable by gauge that the state of partial vacuum in the intake manifold is inversely proportionate to the opening of the throttle. Even a slight opening` movement of the throttle will cause a re duction of the vacuum by two or three inches on the gauge. Recognizing that the deposition of carbon always follows this condition -under ordinary arrangements-and having proved by Aexperimentation that a -small admission ofsteam to the manifold when the vacuum is suddenly reduced, is an efficient correct1ve, we make use of this varymg condition of the vacuum to control and remedy it. The arrangement and deposition of the parts necessary to accomplish this effect constitute the seat of our invention. In brief our arrangement is as follows: A vacuum tank which may consist of a lass jar supported on any conveniently eld bracket is sealed by a brass cap .and gasket. The jar is filled to say within a quarterl of its capacity with water, dippingto near the bottom of the jar is a small pipe opened atthe bottom and secured to the cap thru which it is in air tight communication with another small pipe which opens into the manifold in theV vicinity and on the engine side of the throttle. In the small pipe within the glass jar andv immediatel below the brass ca a small hole is made d1ametri cally thru t e pipe, thus communicating the and ug.

cavity in the upper portion of the jar and the bore of the i e secured to the brass cap. Intermediate o the ends of the pipe from the cap to the manifold, the pipe passes thm'.

, a heating block which is contiguous to tile exhaust manifold,l when the water passes l thrp it is iiashed into steam.

In the'drawings which form part of thisl application Fig. l is a general view of the apparatus in position on'an ordinary automobile engine. Figs. 2, 3, and 4 showA details of the tank and fittings in connection, Figs. 5 and 6 are views of the heating block with pipe connectin same. 4

Referring to the rawings in detail,.a is a glass jar, b is a brass cap having a groove and gasket therein, c a small pipe secured tothe cap b and having two lateral orifices (Z near the top, the top water level is shown at e, f is a union connection for the pipe h a filler ca a bridge piece pierce by a set screw j which engages the boss k on the centre of the ab. y i

Tension bolts Z are secured to the foot brackets m and hook over the arms of the bridge A hole within the cap la is marked-n and connects the two pipes c with a clearway p thru it connecting the. pipe orifices to the jar and 'to the lmanifold g.

The operation of the device is `as follows :v

Water is poured into the glass tank a up to about of its capacity and the cap b and the pipe connections c and g1 made air-tight. When the en 'ne is running steadily a condition f equili rium is maintained between the cavity in the tank above the water level e andthe pressure within the manifold, and no water is taken from the tank. But immediately on any sudden, opening 'of the throttle an unstable condi' tion obtains, the partial vacilum in the manifold is decreased and the excess of pressure causes a flow of manifold gases thru the pipe g and the heating block, fo to the tank a. This gas flow enters the tank direct into the cavity thru the smallorces d, but these being insuficient in areait. al-

through the'water, until another con ition 'of unstable equilibriumisquickly reached The heating block is shown at o so flows from the end of the larger -pi e up 1 in the intake manifold g owing to the engine havingincreased in speed. This ac'- tion which 1n practice takes place 'very rapidly' causes a flow of water thru the larger pipe cv and thru the heating block to the manifoldfg. The small orices d afford means for the permanent calibration of this vacuum balance effect. Thus an intermittent supply of superheated ,steam is admitted to the engine precisely at the moment1 needed to augment the vaporization of'the fuel, and this in a manner which is entirely automatic.

A disturbance of the vacuum condition in. the manifold invariably follows any sudp den opening of the throttle, and this creates a 'corresponding disturbance of the vacuum conditions within the cavity above the4 water level in the tank, which is made use of to admitsteam at that moment to the cylinders.

It is well recognized that in the calibration of a carburetter prime attention must be given to the extreme conditions, that is to say when the engine is idling and when under heavy load, the calibration of the intermediate portion of the range being always more or less faulty. It 1s this latter condition which our invention meets and remedies..

We claim 1. An engine humidifyin devicelattached to or made integral with t e internal combustion engine of an automotive vehicle pressure within the said manifoldand comprisinga water container, a pipe extending through the container into the water and conpipeconnectin said enclosed tank with the intake manifo d of the engine, said pipe having one orifice within the waterin said tank and another ,outlet of smaller area above the water in said tank, a heating block contiguous to the engine exhaust manifold sej cured to and intermediate the ends of said pipe thru which the contents of said pipe pass. l

3. In an engine humidifying device the combination including the intake and exhaust manifolds of the engine, an auxiliary enclosed vtank partially lilled with water and having a visi le water level, a removable cap securing a gasket for sealing lsaid tank, p

a hole thru said cap communicatin with the extremities of two pipes one of w ich is within the tank and terminates near the bottom of the water the other being external to the tank and terminating at and being secured to a metal block, said metal block being contiguous to the engine exhaust manifold and having a passage thru it communi- 'eating with a pipe having its extremity in communication with and secured to the engine intake manifold, the said pipe within the said tank having two outlets within the said tank one said outlet being below the water level in said tank and one said outlet being above the said water level.

Signed at the city of Victoria, this 14th day of October, 1925.

yHENRY LASENBY ROSE. FRANK LOVEL LASENBY ROSE. 

